return index Of an element in an array - Java Collection Framework

Java examples for Collection Framework:Array Search

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Description

return index Of an element in an array

Demo Code

/*/*  w  w w. j a va 2 s  .  c  o m*/
 * http://code.google.com/p/ametro/
 * Transport map viewer for Android platform
 * Copyright (C) 2009-2010 contacts@ametro.org Roman Golovanov and other
 * respective project committers (see project home page)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *  
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) {
        String[] array = new String[] { "1", "abc", "level", null,
                "java2s.com", "asdf 123" };
        String value = "java2s.com";
        System.out.println(indexOf(array, value));
    }

    public static int indexOf(String[] array, String value) {
        if (value == null)
            return -1;
        final int len = array.length;
        for (int i = 0; i < len; i++) {
            if (value.equals(array[i])) {
                return i;
            }
        }
        return -1;
    }
}

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